Meter for indicating horse-power.



w. E. BURT. METER FOR INDIGATING HORSE POWER.

APPLICATION FILED OCT. 30; 1908. v

Patented Dec. 7, 1909.

3 SHEETS-SHEET 1 W. E. BURT.

' METER. FOB. INDIOATING EORSE POWER.

APPLICATION FILED 0'01. so, 1908.

942, 1 30. I Patented 1m. 7, 1909.

1 I Q v gmmm I I 3% I I 1 4 attouwsp W. E. BURT.

METER FOR INDIGATING HORSE POWER. 7 v APPLIUATION FILED O0T. 30, 1908.942, 1 30, 7 I I PatentedDec. 7, 1909.

'3 SHEETSBHEE T a.

I To all whom "it may concern:

WILLIAM E. BURT, OF YUBA; WISCONSIN.

mnrnn ron mm'carme House-rowan.-

Specification of Letters Patent.

Patented Dec. 7,1909.

Application flied October 30,1908- Serial No. 460,350.

Be it known that I, WILLIAM E. Bunn e citizen of the United States,residing at Yuba, 1n the county of Richland and Stateof Wlsconsm, haveinvented anew and use.

ful Meter for Indicating Horse-Power, of which the following is aspecification.

Th s invention relates to meters ,for indicatmg the horse powerdeveloped and consumed by a motor and its object is to provide mechanismwhereby the speed of rotation and the torque developed can beaccurateiyindicated, means being also provided for multiplyin the speedby the torque to indicate the generated horse power. I

Another object is to provide eflicient means for accurately indicatingthe consumed horse ower.

A still furt er ob'ect is to provide simple and efficient'means oraccurately indicating affected by the tor we developed by the machine.

A st further object is to rovide-a ineter of this character which, a teronce being properly adjusted, remains practically un- With these andother objects in'view the invention consists of certain novel details ofconstruction and combinations of parts heremafter more fully describedand pointedout in the claims. I

In the .accompanying drawings the pre- I ferred form of the inventionhas been shown.

In said drawings :Figure 1 is a plan view of the meter. Fig. 2 is asection on line A-B Fig. 1. Fig. 3 is a section on line- C-D Fig. 1.

Fig. 4 is an end elevation of the meter and showing that end thereofused for mdl'catin developed horsepower. Fig. 5 1s a' front elevation ofthe speed-indicating mechanism, the dial being partly broken away. Fig.6 is a view snmlar to Fig; 5

and showing the to us indicator. Fig, 7 is anelevation of the indicatorused for deslgnating develo ed horse power, the dial of t e in icatoreing part y broken away. Fig. 8 is an elevation of the indicator usedfor designating consumed horse ower, the face of the indicator being broen away.-

Fig. 9 is a detail view of a portion of the actuatin mechanism of theindicator shown in Fig. Fi 10 is a section through a portionof the%riction gearing.

Referring to the figures by characters of driven by may loosely engagedby dial 14 upon said altitude and climatic conditions.

therewith, said the meter,

rotate the gear 9 and shaft 12 reference 1 designates the framed themachine, and journaled upon this frame is driving mechanism including amain shaft 2 having a pulley a belt extending from the motor to betested. It-is of course to be understood however that instead ofproviding a pulley, a sprocket wheel or any other suitable device ingpower from the motor. has a collar 4 thereon to which are connectedemor, said straps being also attached to a slidable sleeve 6 mounted onthe shaft 2 and arm 8 upstanding from one endof a rock 3 thereondesigned to be.

be utilized for the purpose of receiv- This shaft 2 65 the weightedstraps 5 ofa centrifugal govthe forked end 7 of an bar ,9 journaled inthe front portion of the frame 1. This rock .bar has a gear 10 securedto it, said gear meshing with a smaller gear 11 secured to a short shaft12. Said shaft is journaled within an auxiliary frame 13 arranged uponthe frame 1, there being a is provided with numerals or othercharacte'rsfor indicating the number of feet per minute traveled by thedriving belt designed to be mounted on the pulley 3. An index 15 issecured to the shaft 12 and rotates index being designed to auxiliaryframe and which oint to any one of the characters-on the ial so as toindicate 'the'speed' of rotation. $5

In order that the index, rock-arm 9, and the governor may beautomatically returned to their initial positions upon the stoppage ofor when the speed of rotation diminishes, a weight 16 is provided, saidweight being attached to '-a chain or other flexible device 17 attachedto a cam-shaped member 18 which is secured to shaft 12, said memberbeing provided with a grooved edge portion into'which the chain or otherfiexib e element 17 is designed to work as the shaft 12 partly rotates.i

From the foregoing description it will be understood that the weights ofthe governor 5 will be thrown outwardly as the shaft 2 rotates, theamount of movement being in pro ortion to-the speed of rotatiop of theshe 2. It will be obvious there ore' that the sleeve 6 will be shiftedalong shaft 2 and cause a correspondin movement of the rock-bar 9. -Gear10 wi l therefore partly against the action of the weight 16 and theindex 15 will accurately indicate upon the dial the number of eet per"minute traveled by the drive-belt designed to be mounted on two hundredrevolutions per minute, the

the pulley 3. I For example, should this pulley be five feet incircumference and make ably mountedwithin the head and secured at theirouter ends to a disk 22, the outer face of which is concave as indicatedparticularly in Fig. 10. Sprin s 23 are arranged upon the arms 21 anhear at their ends against the disk 22 and the head 20, so as to holdthe disk 22 normally spaced from the head. Means are provided upon arms21 for limiting the movement of disk 22 away from the head 20, saidmeans preferably consisting of heads 24formed upon the ends of the arms.y

A secondary shaft 25 is journaled upon the frame 1 and has a pulley 26or other revoluble element secured thereto and designed to be connectedto the load. This shaft has a head 27 secured to it and prov ded withparallel arms 28 spaced from but disposed adjacent opposite portions ofthe shaft 25,'each of said arms havin a trunnion 29 extending laterallythere rom and provided with a roller '30, or other suitable antlfrictiondevice. These rollers are mounted to travel within slots 31 formedlongitudinally within arms 32, which embrace the arms 28 and which arespaced apart a suflie ient distance to permit the said arms 28 and thehead 27 to work between the arms 32. These slotted arms 32 extend fromone end of a sleeve 33,.which is feathered on the shaft 25, and has ahead 34 from which radiate oppositely extending trunnions 35 carryinganti-friction rollers 36. A 'ear 37 is'loosely mounted on shaft '25,said gear being of the same size-as the gear 19 and meshing therewith.This gear is pro-' vided on one face with wings 38, curved transverselyso as to lie concentric with shaft 25, the two wings being oppositelydisposed and provided with inclined cam faces 39 on Y which the rollers36 are designed to simultaneously travel. A spring 40 isarranged on theshaft 25 between the sleeve 33 and the head.27, and servesto hold therollers 35 are pivotally connected to parallel links 42, which links arein turn pivotally connected to' one arm 43 of a bell-crank lever 44. Themembers 41-, links 42 and arm 43 form a arallelogram which permits thedistance etween the ivot of the bell-crank lever and the point ofconnection between sleeve 33 and members 41 to vary, but whichnecessitates simultaneous swinging movement of the members 41 and thearm 43. The-other arm 45 of the bell-crank lever is connected by meansof a link 46 with a lever 47 fulcrumed, as at 48, upon an auxiliaryframe 49, which supports a dial 50. A toothed segment 51 is secured tolever 47 and is concentric with the pivot 48, said segment mesh-. ingwith a gear 52 secured to a spindle 53 carrying an index 54. Dial 50 isrovided with numerals or other characters or indicating the torque.

It will be understood that when the shaft 2 is rotated motion will betransmitted therefrom through gear 19 to gear 37, which, as heretoforestated, is loosely mounted on the shaft 25. This shaft is connected, bymeans of a belt or other flexible device, with the load and before saidload will be driven the gear 37 will partly rotate so as to force thecam faces 39 back of the rollers 36, and thus shift the sleeve 33against the action of the spring 40. \Vhen the resistance of the springshall equal the resistance of the load the; gear 37 and the shaft 25willrotate together. sleeve 33 upon the shaft 25 will result in theactuation of bell-crank lever 44 and this lever will pullon the lever 47through link 46 and thus cause the segment 51 to actuate /gear 52, andproduce a corresponding movement of the index 54, which will cotiperatewith the numerals or other characters on the dial 50 to indicate thetorque.

Journaled upon the frame 1 at one end thereof and extending at rightangles to the shafts 2' and 25 is a shaft 55 onwhich is feathered a disk56 carried by a sleeve 57.

i This sleeve is engagedby the forked end 58 of an arm 59, which isparallel with lever 47 and is connected to it by parallel links 60,forming a parallelogram, so that the arm 59 and lever 47 are preventedfrom swinging independently of each other, but are permitted to shiftlongitudinally with relation to each other. The disk 56 normally bearsupon the center of the concave dis 22, and the two disks are held infriction contact by the springs 23.

A centrifugal governor 61 is mounted on the shaft 55 and the slidingsleeve 62 thereof engages the hooked end 63 of an arm 64 secured to andradiating from a gear 65 mounted to rotate within an auxiliary frame 66.A dial 67 is carried by this frame 66 and has an index 68 movable with aspindle 69 having a gear 70 which meshes with the The longitudinalmovement of' consumed during the operation of the maamigo,

As heretofore stated, the

not therefore rotated under normal conditions. When the meter issubjected to the resistance of a load the torque-indicating mechanism isactuated in the manner hereinbefore described, and, obviously,- as soon:as [over 47 is shifted, a corresponding movement of arm 59 is produced,so that sleeve 57 is thus caused to slide along the shaft 55, i

the amount of movement of said sleeve being in proportion to the torque.Moreover the speed of rotation of the disk 56 will in crease inproportion to the movement of said disk along shaft 55, and thenecessary multiplication of the torque by the, speed for indicatinghorse poweris thus obtained. The rotation of the shaft 55 will of coursecause the governor 61 to shift and actuate the arm 64 which will in turnoperate gears 65 and and cause theindex 68 to move over the dial 67 andindicate the horse power which is generated.

In order that the amount of horse power chine may be accuratelyindicated a register such as indicated in Fig. 8 is provided. Shaft 55is" provided with atworm gear 74, designed tq actuate a gear arranged on.a shaft 76 projecting into a housing 77.

Anothenworm 78 is arranged on shaft 76 and drlves a gear 7 9, one faceof which constitutes a dial on which are arranged numerals preferablyranging from Ito 9. Dials 80 and 81 are also arranged within the hous-'ing 77, the dial 80 being provided with radial fingers 82 designe to besuccessively engaged b a pin 83 outstanding from the gear 79. ingers 84also radiate from; the dial 81 and are designed to-be successivelyengaged by a pin 85 extending from one face of the dial 80. It will beseen therefore that the amount of horse power consumed will beaccurately indicated by these dials.

The meter herein described'maybe used 1n various ways, and isintended,rimarily, to be placed between the power and the load, so that thegenerated horse power and the amount of readily determined at all timesshaft 2 and-the disk 22 rotate together and the disk 56 normally restsat the center of disk 22 and is orse power consumed can be ferent;kinds. It is to be understood also construction and arrangement 1 of thepans with ut epa tingom e. pir or acrificin the advantages. of theinvention.

Wli'at is claimedjis 1. In a meter of the class described thecombination with variable power mechanism including contacting frictlondisks, one of said disks being normally inactive; of power mechanism forrotating the other disk,

' for u e-inlwan sti ni h mashiae y d fthat various changes may be madein. the

torque-indicating mechanism actuated by the said power mechanism, meansoperated .by the torque-indicating mechanism, for

shifting the normally inactive disk upon the face of the disk of thepower mechanism in proportionto the developed torque, and separate meansoperated by the shifted disk for I indicating'power at the time ofobservation,

and the total energy respectively. 7

2. Ina meter of the class described the combination with variable powergearing including contacting friction disks, one of said disks beingnormally inactive of power mechanism .for actuating the other disk,

torque-mechanism operated by the said power mechanism, means operated bythe torque mechanism for shifting the normally inactive disk upon theface of the revoluble disk in proportion to the developed torque,

and an indicator operated, bfy the shiftable disk and including'a centriugal governor, a rocking element actuated thereby, an index, and gearinginterposed between the index and the rocking element. for transmittingmotion to said index. 1

3. A meter includin v torque indicating mec anism, an indicator fordisclosing horse-power at the time of observation, connections betweenthe said mechanisms for actuating said indicator, an indicator fordisclosing total energy, and means operatedby said connections foractuating said lastmentioned indicator.

4. In a d amometer of the class described'varia le power gearingcomprising a driving element, a normally inactivadriven element,torque-operated means for shifting the driven element into operativerelation driving mechanism,

to'the driving element, and means operated by the drivenelement forindicating horsepower at the time of observation, and totalenergy-indicating means operated by said driven element.

5. In a dynamometer of the class described torque-indicating mechanismcomprising. a shaft for connectionwith a load, apower-actuated camloosely mounted on the shaft and including oppositely disposed arcuatewings having inclmed bearin aces, .parallel arms-secured to 'andmevolube with the shaft, a sleeve feathered upon the shaft, arms upon thesleeveand slidably enga mg the first mentioned arms, trunnions ra iatingfrom the sleeve, a spring upon theshaft m own, I- have hereto afiixed mysignature and bearing agailrlist the sleeve to holal the in he presenceof two witnesses. trunnions n'orma y in contact with t e inclined facesof the cam wings, a torque-indi- WILLIAM BURT 5 vcator, and means fortransmitting'motion to Witnesses: I

said indicator from the sleeve. 7 ROBERT E. TRAPPE,

In testimony that I claim the foregoing as ERNEST JAHN.

